This machined steel two stage fake suppressor threaded to fit your M-11/Mac-10 9MM SMG. It is constructed of high quality, welded steel and parkerized to match your M-11 giving it a finished tactical appearance. It will also fit the Semi Auto M-11 9mm and MPA 9mm guns if the thread is a 3/4 x 10, will NOT fit MPA mini pistol barrels unless our thread adapter is added. Please call us if you are not sure of thread sizes.(Gun and other components in photos not included) 11" in length, weighs 1lb 8 oz.